4-cylinder:
Probably only applicable to the North American spec 4-cylinder from 77 on with two cooling fans is this thermal cut-out in place of the conventional in-line fuse fitted to UK cars with the single fan.
However that differs from this on-car example with spade terminals ...
... as does this.
V8:
The first fuse I fitted to Vee - melted in normal use but still functioned.
The second type - fine in normal use but melted when one of the fans was unable to spin.